/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/Selection/DynamicMeshSelector.h
Accumulate geometric elements (currently 3D triangles, line segments, and points) for the provided Selection in the provided ElementsInOut. ElementsInOut is not cleared.
virtual void AccumulateSelectionElements ( const [FGeometrySelection](API\Plugins\ModelingComponents\Selection\IGeometrySelector\FGeometrySelection) & Selection, [FGeometrySelectionElements](API\Plugins\ModelingComponents\Selection\IGeometrySelector\FGeometrySelecti-_2) & ElementsInOut, bool bTransformToWorld, bool bIsForPreview )